Join Date: Jul 2008
Location: chesapeake bay
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yes it is normal, look at it like this.
the manual pump is nothing but 2 check valves, one allows water into the "pump" the other allows it out. ie both valve go the same way tank to the sink, when the pressure changes the valves leak a little. when the pressure stabilizes the valves seal using the spring in them. if the manual pump was new it might not leak, notice i said might
you might want to run a new water line for the manual pump straight to the tank. that way if the 12v pump dies you are not trying to pull water thru the 12 v pump. this will stop the leak, and allow you to just pump a little water manually when needed without turning on the 12 v pump
Last edited by scottyt; 05-31-2010 at 10:58 PM.